·      Bengal Heatwave 2025 | Rain and Storms to Bring Relief in 8 South Bengal Districts by May 13

·      Heatwave grips Bengal but relief is near.! Rain and storms to hit 8 South Bengal districts by May 13th, 2025. North Bengal braces for heavy rainfall. Stay updated.!

Bengal is burning under a relentless heatwave but relief is on the horizon.! The weather department predicts thunderstorms and rain in eight South Bengal districts by May 13th, 2025 with winds up to 50 kmph. North Bengal, meanwhile faces heavy to very heavy rainfall warnings, especially in Alipurduar and Jalpaiguri. Kolkata, however will continue to swelter with rising humidity and dry heat. Here’s what you need to know about the heatwave, upcoming rains and early monsoon signals in the Andaman-Nicobar Islands.

Details & Context

South Bengal is grappling with a severe heatwave with temperatures soaring and humidity making life unbearable. Districts like Purulia, Bankura, West Medinipur, Jhargram, West Bardhaman and Birbhum are the worst hit with temperatures expected to rise by 2–3°C until May 14th, 2025. The India Meteorological Department (IMD) forecasts that Sunday May 11th will bring thunderstorms and light to moderate rain to eight South Bengal districts,

·      North 24 Parganas

·      Purulia, Bankura

·      East and West Bardhaman

·      Birbhum

·      Murshidabad

·      Nadia

Winds of 30–50 kmph and lightning are expected, offering temporary relief.

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In North Bengal the heatwave is scorching lower districts like Malda, North Dinajpur and South Dinajpur with temperatures potentially climbing 3°C by May 11. However, the upper five districts—Darjeeling, Kalimpong, Alipurduar, Jalpaiguri and Cooch Behar—are under a heavy rainfall warning for May 11th – 12th with Alipurduar and Jalpaiguri likely to see up to 200 mm of rain on Monday. The IMD warns of thunderstorms with lightning and gusty winds across North Bengal.

Nationally, the IMD announced an early monsoon onset in the Andaman-Nicobar Islands, expected on May 13th, 2025—nine days ahead of the usual May 22nd date. Last year, it arrived on May 19th per @HindustanTimes (May 10th, 2025). This early monsoon is driven by cyclonic circulations over the Andaman Sea and southeast Bay of Bengal, alongside active weather systems like troughs stretching from Rajasthan to Madhya Pradesh and Karnataka to the Gulf of Mannar.

Quotes

·      An IMD official told The Times of India (May 10th, 2025): “South Bengal will see thunderstorms and rain starting May 11, bringing relief from the heatwave. North Bengal’s upper districts should prepare for heavy rainfall, especially on Monday.”

·      A local resident, Priya Das from Kolkata, shared on X (@PriyaKolkata, May 9, 2025): “It’s unbearable in Kolkata.! The heat and humidity are suffocating. Praying for rain soon. #BengalHeatwave”

Additional Information

The heatwave’s intensity is due to multiple weather systems. Cyclonic circulations over Rajasthan, Madhya Pradesh, Tamil Nadu, Assam and Bangladesh combined with a trough from Rajasthan to Madhya Pradesh are fuelling dry hot conditions. Another trough from Uttar Pradesh to Karnataka and a north-south trough from Karnataka to the Gulf of Mannar are contributing to the heat in South India, per @IMD updates (May 10th, 2025).

In Kolkata, the minimum temperature on May 10th was 29.1°C, with the previous day’s maximum at 38.6°C. Humidity levels ranged from 36% to 92%, making the city feel like a furnace. Dry heat is expected to persist until May 14th with little chance of rain. X users like @WeatherKolkata (May 9th, 2025) noted, “Kolkata’s humidity is dropping but the dry heat is just as bad. No rain until Wednesday.”

Other states are also affected. Heavy rain warnings are in place for Arunachal Pradesh, Sikkim, Assam, Meghalaya and Manipur while heatwave alerts cover Bengal, Bihar, Odisha and Sikkim. Hot and humid conditions persist in Assam, Meghalaya, Jharkhand, Bengal, Odisha, Kerala, Mahe, Tamil Nadu and Puducherry, per @NDTV (May 10th, 2025).

@GoogleTrends shows a 150% spike in searches for “Bengal heatwave 2025” and “monsoon Andaman 2025” since May 8th, 2025 reflecting public interest. On X, hashtags like #BengalHeatwave and #RainAlert are trending, with over 10,000 posts on May 9th – 10th, 2025.

Read More: Kolkata Airport on High Alert: 12 Flights Cancelled Amid India-Pakistan Tensions in May 2025

Impact Analysis

The heatwave is taking a toll across Bengal. In South Bengal, the rising temperatures and humidity are causing discomfort, with reports of heat-related illnesses increasing by 20% in rural areas like Purulia and Bankura, per @TheIndianExpress (May 9th, 2025). Farmers are struggling, as the heat is drying up water sources, delaying planting schedules.

In North Bengal, the heavy rainfall warning poses risks of flash floods and landslides, especially in hilly areas like Darjeeling and Kalimpong. Alipurduar and Jalpaiguri’s forecast of 200 mm rainfall on May 12 could disrupt transportation and damage crops, per a local report on X @NorthBengalNews, May 10th, 2025.

The early monsoon in Andaman-Nicobar is a positive sign for India’s rainfall season, potentially benefiting agriculture nationwide. However, Kolkata residents are frustrated, with posts like @KolkataWeatherFan (May 10th, 2025) stating, “Everyone’s getting rain except Kolkata.! This heat is unbearable. #BengalHeatwave.”

Economically, the heatwave is impacting outdoor workers and small businesses, while the upcoming rains may affect local markets and travel plans. Socially, the weather shifts are fuelling anxiety, with X users expressing both relief and concern over the storms.

Conclusion

Bengal’s heatwave is a challenge but the forecast of rain and storms offers hope. South Bengal’s eight districts will see relief starting May 11st, while North Bengal braces for heavy rainfall. Kolkata, however, must endure the heat a bit longer. The early monsoon in Andaman-Nicobar signals a promising rainy season ahead. Stay prepared for changing weather patterns and keep an eye on updates as Bengal navigates this heatwave-to-rain transition.

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